Red foxes have been exceedingly successful in colonising built-up environments, especially lower-density suburbs, although many have also been sighted in dense urban areas far from the countryside.
In 2006 it was estimated that there were 10,000 foxes in London. City-dwelling foxes may have the potential to consistently grow larger than their rural counterparts, as a result of abundant scraps and a relative dearth of predators. In cities foxes may scavenge food from litter bins and bin bags, although much of their diet will be similar to rural foxes.